Improvement in boot and shoe sole channeling machines



SAMUEL HENSHALL, OF IEIILADELPIIIA, 5PENINSYLYANIA.

IMPRovEMENTiN actor.iixnuasno-Esoria calminitiatie MAQHinEsLSpeciication,forming,part of Letters Patent N0. 180,37'1145datedA August8,1876 ;4 applicationv filed Ju1y, 5`,1877,6. v

To all whom it may concern:

Be it known that I, SANIUEL HENSHALL, of Bhiladelphia, -Pennsylvania,have invented certain Improvements in Channeling 1Macllines, of whichthey'followingisafspecilica tion The object of my invention is to soconstruct a machine for channeling the soles of boots and shoes that thedepth of the channel is not governed by the depth to which thefeed-wheel penetrates the sole; and this object I attain in the mannerwhich I will now proceed to describe, reference being had to theaccompanying drawing, in Which- Figure 1 is a side viewof my improvedchanneling-machine; Fig. 2, a section on the line 1 2 pFig. 3, a frontView ofthe upper part of the machine, with the feed-wheel removed; Fig.4, an enlarged view of part of the machine, and Fig. 5 a diagramillustrating the edge of the finished sole.

A is the base or table of the machine, in bearings on which turns theshaft B,'carrying at its front end a bevel-wheel, a, which gears into apinion, b, formed on or secured tof'the under side Aof the rotary bed c,on which the Work rests as it is being operated upon. To a standard, C,at the rear end of the table A, is hung the rear end of an arm, D,having bearings for a shaft, E, which carries at its front end a toothedor roughened feed-wheel, d. 1t should be understood that the shafts Band E are so geared together, and that the wheel d is of such adiameter, that the periphery of the said wheel and thatipart of the faceof the table C immediately below the wheel travel at the same speed.

Two cutting-knives are employed, as usualthe knife e, for cutting thechannel x in the sole, and the knife f,`for cutting the groove y, Fig.5. The knife e, instead of being connected directly to the arm D, asusual, is secured to the lower end of a bar, I, which is adapted to aguiding-slot out in the front end of the arm D, and has a threaded stem,g, passing through fa bracket, g', upon the arm, and provided above witha thumb-nut, h. Around the stem g is coiled a spring, z', which bears atone end upon the bracket h, and at the other upon a nuwzadapted tonearadedfpaion.ofthe stein.

'Byi operating l.the `thumb-Init h, the sliding bar, andconsequently,the channelingfknitee,

canbe raisedor lowered y at pleasure, and by operating the nutjt thepressure-of thespring,

t upon the slide can be easily regulated.

The sliding bar J, which carries the grooving-knife f, is adapted to aslot in a fixed frame, K, at the front of the machine, this frame havingarms L, which serve to steady the arm D in its vibrating movement. Thisvibrating movement of the arm D is necessary, partly on account ofirregularities in the thickness of the soles to be operated upon, andpartly because the front end of the arm has to b'e elevated to permitthe introduction and Withdrawal of the work. The elevation of the outerend of the arm for the latter purpose is effected, in the presentinstance, by mea-ns of a lever, M, the long arm of which is arranged' soas to be readily depressed either by hand or treadle, while its shortarm engages with a pin, k, on an arm, N, hung to the arm D, so that bydepressing the long arm of the lever the outer end of said arm D willbe` raised, and on releasing the lever the said outer end will bedepressed.

`In order to insure the raising of the sliding bar J, which carries thegrooving-knfe f, at the same time that the arm D is raised, I use alever, P, hung to the frame K, the short arm of the lever engaging witha pin, m, on the bar J, while its long arm is acted upon by a setscrew,a, carried by an arm ofthe lever M.

Both the sliding barJ and arm D are acted upon by springs It, whichtendjto maintain said bar and arm in their lowest positions, thedownward movement of the bar J being limited by a set-screw, s, whilethat of the arm D is determined by the lowerend of its arm N coming intocontact with the table A.

In ordinary channeling-machines, the channeling-knife e is rigidlycarried by the arm D,

so that the depth to which it enters the lea-ther is governed merely bythe depth to which the feed-wheel penetrates, the result being a deepcut when the leather is soft, and a shallow cut when. the leather ishard. Another objection to the ordinary machine is, that the channel@ing-knife must be adjusted to suit the dil'erent thicknesses of soles,so that the'attention of a skilled Workman is required in running themachine. u

It will be seen that in my machine the bar I, carrying thehanneling-knife, is, in its vertical movement, entirely independent ofthe wheel d, the depth of the cut 4made by the knife depending solelyupon the extent to which the said knife projects beyond the end of thebar,-which may be furnished with an anti-friction roller, so that thesole will move freely beneath the bar without being indented thereby. Itwill also b e observed that, as the bar I is acted upon by a spring, itwill readily yield to suit different thicknesses of soles, the usualtedious adjustment being entirely dispensed with. The depth of thegroove out by the knife f may also be regulated by adjusting theset-screw s so as to limit the -down- Ward movement of the 'bar J.

' Witnesses:

I claim as .my invention- 1. In a channeling-machine, the combination ofthe arm carrying the feed-wheel with the channeling-knife, arranged tobe adjusted vertically independently of the said feed-Wheel during theoperation of the machine, as set forth.

2. The combination of the arm D, carrying the feed-Wheel d, with thespring sliding bar I, carrying the channeling-knife.

3. The combination of the lever M and spring sliding bar J with theintermediate lever P.

4. The combination of the levers M and P with the ad justing-screw n, asset forth.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

SAMUEL HEN SHALL.

HUBERT HoWsoN, HARRY SMITH.

